EP 3741188 B1 20240529 - FILAMENT EMULATION CIRCUIT FOR A LIGHT EMITTING DIODE TUBE LAMP
Title (en)
FILAMENT EMULATION CIRCUIT FOR A LIGHT EMITTING DIODE TUBE LAMP
Title (de)
GLÜHFADENEMULATIONSSCHALTUNG FÜR EINE LEUCHTDIODENRÖHRENLAMPE
Title (fr)
CIRCUIT D'ÉMULATION DE FILAMENT POUR UNE LAMPE À TUBE À DIODES ÉLECTROLUMINESCENTES
Publication
Application
Priority
- EP 18152370 A 20180118
- EP 2019050755 W 20190114
Abstract (en)
[origin: WO2019141613A1] Provided is a filament emulation circuit (7) located on one end of a retrofittable tubular light emitting diode lamp (2) for operating with a fluorescent ballast (1) comprising a first power connection and a second power connection for receiving an output power of the fluorescent ballast (1), a first switching element (3) arranged to prevent a current to flow between the first power connection and the second power connection when 5 the first switching element (3) is set in a non-conductive state, a first energy storage device (10) coupled between the first power connection and the second power connection, a first controller for controlling the first switching element (3), wherein the first controller is arranged for receiving power from the first energy storage device (10).
IPC 8 full level
H05B 45/3578 (2020.01); H05B 45/3725 (2020.01)
CPC (source: EP US)
H05B 45/3578 (2020.01 - EP US); H05B 45/3725 (2020.01 - EP US); Y02B 20/30 (2013.01 - EP)
Citation (examination)
US 2013328402 A1 20131212 - NOGUCHI HIROKAZU [JP]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2019141613 A1 20190725; EP 3741188 A1 20201125; EP 3741188 B1 20240529
DOCDB simple family (application)
EP 2019050755 W 20190114; EP 19700303 A 20190114